Our company has recently purchased intel NUC5i5RYH and NUC5i5RYK,installed operating system Ubuntu 14.04.3 , we use USB3.0 camera and set XHCI Mode :Smart Auto, when we press the power button to turn off the NUC （or execute linux command：sudo shutdown -h now ）,the NUC didn't really shut down, but to achieve the function of the restart. when we use USB2.0 camera ,the NUC can be shuted down normally !

This problem is a serious Bug for out product , we hope to solve it as soon as possible, so we look forward to your reply.